Nonstandard neutrino interactions and transition magnetic moments

TL;DR

This paper investigates constraints on nonstandard neutrino interactions, especially transition magnetic moments, using experimental data, and derives bounds on tensorial couplings, discussing implications for various scattering experiments.

Contribution

It provides new bounds on tensorial neutrino couplings from magnetic moment data and explores how other experiments can further constrain these interactions.

Findings

Strong bounds on tensorial neutrino couplings derived from magnetic moment data

Discussion of constraints from neutrino-electron and neutrino-nucleus scattering experiments

Implications for nonstandard neutrino interaction models

Abstract

We constrain generic nonstandard neutrino interactions with existing experimental data on neutrino transition magnetic moments and derive strong bounds on tensorial couplings of neutrinos to charged fermions. We also discuss how some of these tensorial couplings can be constrained by other experiments, e.g., on neutrino-electron and neutrino-nucleus scattering.